1Kb DNA Ladders for Routine DNA Fragment Sizing and Analysis
1Kb DNA Ladders covers the 1-kilobase-increment gel electrophoresis size standard, the most widely used DNA ladder in molecular biology. A standard 1 kb ladder provides 10 or more defined fragments spanning 0.5 to 10 kb, with a brighter 3 kb reference band for quick gel orientation. Extended versions such as 1 kb Plus add coverage down to 100 bp, while 1 kb Extend reaches 48.5 kb for large-fragment analysis. Ready-to-load formats are standard for routine laboratory use. Academic and core laboratories can benefit from guidance when selecting the appropriate ladder format and size range for their electrophoresis workflow.
Explore available 1 kb DNA ladders or request a quotation by contacting customerservice@mbpinc.net. Our team can help identify the appropriate standard, Plus, or extended-range ladder for your DNA sizing applications.
1Kb DNA Ladders
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What is a 1 kb DNA ladder?
A 1 kb DNA ladder is a gel electrophoresis size standard containing a defined set of double-stranded DNA fragments spaced at or near 1-kilobase intervals, produced by digesting proprietary plasmids with restriction enzymes to generate typically 10 or more bands spanning 0.5 to 10 kb. One band, commonly at 3.0 kb, is supplied at higher concentration to serve as a bright reference band for rapid gel orientation. The 1 kb ladder is one of the most widely used size standards for routine molecular biology applications, covering the size range commonly encountered in PCR products, restriction digests, and cloned inserts.
What you will find:
- ZR 1 kb DNA Marker for gel electrophoresis analysis and routine DNA fragment sizing
- Azura PureView™ 1kb DNA Ladder for the detection of DNA bands with high visibility in agarose gel systems
- 1kb Plus Opti-DNA Marker for cloning verification workflows and a wide range of DNA fragment analysis
- 1kb Opti-DNA Marker used in nucleic acid analysis and PCR for standard molecular weight reference
- Accuris SmartCheck™ 1kb DNA Ladder for quality assessment of gel and DNA sizing with high precision
- 1 KB DNA Marker for routine DNA electrophoresis
How to choose a 1 kb DNA ladder variant
Choose a standard 1 kb ladder for routine PCR and restriction digest analysis
A standard 1 kb ladder with fragments spanning approximately 0.5 to 10 kb is suitable when most expected DNA fragments fall within this range, making it ideal for routine PCR verification and restriction digest analysis.
Choose a 1 kb Plus ladder when samples include smaller fragments below 500 bp
The 1 kb Plus format extends coverage down to 100 bp while maintaining the upper size range, making it useful when both small PCR products and larger DNA fragments need to be analyzed on the same gel.
Choose a 1 kb Extend ladder when samples include very large DNA fragments
The 1 kb Extend ladder expands coverage up to approximately 48.5 kb and is appropriate for large plasmids, BAC clones, and other high-molecular-weight DNA fragments analyzed on low-percentage agarose gels.
Use the recommended loading volume for accurate mass estimation
Loading the ladder according to the manufacturer's recommended amount helps ensure that any provided band mass references can be used for approximate comparison of DNA quantity based on staining intensity.
Confirm the tracking dye is compatible with your staining and imaging setup
Different ladder formulations use different tracking dyes. Some dyes may partially obscure nearby bands under UV visualization, while alternative formulations are designed to minimize interference and improve visibility across the entire ladder range.
Specifications context
Standard 1 kb DNA ladders are generated from defined DNA templates digested to produce fragments of known sizes. Enhanced-intensity reference bands are included to provide a readily identifiable orientation marker during gel analysis.
Ready-to-load 1 kb ladder formats with reduced-shadow tracking dyes are commonly used in routine agarose gel electrophoresis workflows because they simplify preparation and improve overall band visibility.
Contact the expert team at MBP to book high-quality 1Kb DNA Ladders for your lab today.
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